Understanding Industrial Globe Valves

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globe valve
Simplified view of globe valve.
Globe valves work differently when compared to gate valves, ball valves, butterfly valves and plug valves. They are primarily used to control the flow inside pipes, and are popular in many industries. Globe valves are ideal in situations where precise control is required. They are used to regulate flow in pipelines with a high degree of control by regulating a pressures drop created in the valve body that allows the fluid to pass through the passageway (port) in the valve body. The globe valve stem provides linear motion to bi-directionally control flow, opening and closing the valve by changing the distance between valve disc and seat. The flow in the pipeline changes according to the position of the disc lifting from the seat. The movement is controlled through the use of manual operators, or through the use of electric or pneumatic actuators.

Applications of Globe Valves 

Globe valves are used in many different industries, but particularly in the petrochemical and power generation industries on fuel oil pipes, chemical feed systems, steam pipes, as well as cooling water and feedwater systems.  Other industrial applications of globe valve include boiler, main steam vents, and turbine lube oil systems.

Pros

Globe valves have many advantages that make them preferable over other valve designs. Globe control valves have excellent shut-off and throttling capabilities. In addition, globe valves are easy to maintain and repair compared to other valves.

Cons

Globe valves have also certain shortcomings. For instance, globe valves have an S-shaped flow pattern (as opposed to a straight-through flow pattern) which creates a significant pressure drop making them unsuitable for applications constant pressure is required.  Another shortcoming of the globe valves is they generally require greater torque to open and close, requiring larger actuators to properly seat the valve.

For more information on industrial globe valves, or any type of industrial valve, contact Tri-State Technical Sales by calling 610-647-5700 or by visiting https://tristatetechnicalsales.com.